Home / 128,977.40-193,466.10-119,646.20

Finding the Fourth Proportional to 128,977.40, 193,466.10 and 119,646.20

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Solution

The fourth proportional to 128,977.40, 193,466.10 and 119,646.20 is: 179,469.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,977.40 : 193,466.10 = 119,646.20 : x
  2. Step 2: Convert to fraction form
    128,977.40/193,466.10 = 119,646.20/x
  3. Step 3: Cross multiply
    128,977.40x = 193,466.10 × 119,646.20
  4. Step 4: Simplify right side
    128,977.40x = 23,147,483,693.82
  5. Step 5: Solve for x
    x = 23,147,483,693.82/128,977.40
  6. Step 6: Final answer
    x = 179,469.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.